Improvement in the method



w. BUTCHER, Jr. &'T. SHAW. METHOD OF FORMING WHEELS, TIRES, &c., BY'GASTINGS.

No. 65,642. Patented June 11, 1867.

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UNITED S ATES PATENT OFF-ICE.

WILLIAM BUTCHER, JR., or SHEFFIELD, ENGLAND, AND THOMAS, SHAW, orPHILADELPHIA, PENNSYLVANIA.

IMPROVEMENT IN THE METHODOF FORMING WHEELS, TIRES, &c., BY CASTING.

Specification forming pal-rt of Letters Patent No. 65,64), dated June11, 1867.

To all 'whom it may concern.-

Be it known that we, WILLIAM BUTCHER, J r., of Sheflield, England, andTHOMAS SHAW, ofthe city and county ot'lhiladelphia, Pennsylvania, haveinvented anew and Improved Apparatus for Wroughting Cast Metals; and wehereby declare the following to bea full, clear, and exact descriptionof the same, reference being had to the accompanying drawings, and tothe letters marked thereon.

Our invention consists in a mode of creating a pressure by centrifugalforce upon the metal while in a molten state, as hereafter described. Inorder to enable others to use and practice our invention, we willproceed to describe its eoi'istruetion and mode of operation.

011 reference to the accompanying drawings, which form a part of thespecification, Figure 1 is a side view. Fig. 2 is a vertical sectionthrough the center of all that part above line v Similar letters referto similar parts, of which a, Fig. l, is an iron column united to thediskb'ase I), and braced by three ribs, 0, mounted on-and united towhich is a covering, f, which surrounds and protects pulley g, for thepurpose as hereafter described. On the top of said coveringfis a hearingor journal-box, 0, Fig. 2, for the support of shaft D, (represented bydotted lines in Fig. 1,) its lower hearing being at the base 19, and onthis shaft pulley g revolves, for the purpose as hereafter described. Onthe top of said covering f is secured, by means of screws, ametal ring,h, provided with three teeth inclined in one direction, as indicated inFig. 1.

i is a metal ring, to which is secured a handle, Said ring 1' isprovided on its outer half with inclining teeth fitting onto the teethof ring h.

The inner half of ring iis allowed to project beyond the teeth, asindicated in Fig. 2, for the purpose of allowing said ring 11 to revolveand be supported concentrically by said projecting half revolving on theinner side of ring 11-, all for the purpose as hereafter described.

The upper end of shaft D terminates in a disk, R, Fig. 2. In the centerof the top side of said disk is a projecting nib, as shown in Fig. 2,for the purpose of keeping in dd moon- I centric with the same whenoperated, as hereafter described. Said mold m rests alternately uponring 6 and disk R,-and is free to be lifted from both, all for thepurpose as hereafter described.

The object of this invention is to cast metal in a revolving mold forthe purpose of purifying castable metals of their gases and bringingtheir different atoms in proper relation to each other in respeet totheir affinities, and in making itmore homogeneous by reason ofcentrifugal force, which operation is particularly applicable to thewroughtmg of steel, especially wheels and tires.

The apparatus is put in operation in this wise: A belt communicatingwith arevolving shaft and with pulley g, (the coveringf is open on oneside, forming a mouth for the admission and protection of said belt,) arevolving I110- tion of five hundred revolutions per minute (more orless, according to size, &c.,) is given said pulley g and shaft D, theimmediate and desired effect of which is to revolve mold m, at whichtime the molten metal is poured into said mold through the aperture 02-,and when the metal is sufiioiently congealed the revolvin g mold isarrested by turning ring ione-third of a revolution by means of handleK, which movement causes the mold to be lifted from the revolving diskR. The mold will revolve for a time on said ring i until the inertia isovercome, after which the mold can be re moved, and the apparatus is ina condition to repeat the operation. The mold is then placed on saidring 4', and is lowered as gradually on revolving disk B as it waslifted. from the same by the partial revolving of ring 2 asaforementioned.

During the course of the foregoing opera tion the ,molten metal isthrown violently to the periphery, and the particles and atoms of themetal are rubbed, rolled, and wroughtuntil the inertia of the moltenmetal is overcome as by this method metal can be worked in the fluidstate to advantage, when the same metal would have previously crumbledunder the usual forging method.

The invention is designed more particularly for the casting ofcar-wheels, loeomotive-tires,

ingots, Sac.

It Will be evidentthatmoldso't' various shapes can be employed, and thatslight changes in mechanical structure could be effected without anyalteration in the result.

Wetherefore do not wish to confine ourselves to the exact mode hereindescribed of constructin g the machine or of shaping the molds; but

What we (10 claim, and desire to secure by Letters Patent, is

1. \Ve claim as our improvement of the method of. forming tires, wheels,and other articles of metal by casting, supporting the mold while themelted metal is being poured into it, upon, but unconfined to, arevolving disk, substantially as and for the purposes specified.

2. In combination with a mold and revolving disk, as set forth in theforegoing clause, we claim the two rings h and i, or their equivalents,substantially as and for the purposes specified.

WM. BUTCHER, JR. (L. s.] I THOMAS SHAW. 1.1, s]

Witnesses:

A. E. WITMER, GEO. R. TAYLOR.

